Like the iView PS3 portal, the Yahoo!7 service works through the PS3's internet browser. Picture quality is really quite good for a streaming service, but
you can't get the video to completely fill your TV screen you need to find the TINY little full screen button in the bottom right hand corner of the screen, which is so small you'll probably miss it.
Video selection is quite limited at the moment as well, although chances are it will get better as time goes on. But at the moment, if you want something more than Sunrise, XFactor or The Event, you might be a bit disappointed. Unless you've got a thing for Better Homes and Gardens, that is or comic reality shows, that is...
As with most VOD services, downloads will be metered, so make sure you've got plenty of data in your broadband plan before watching.